CN2262104Y

CN2262104Y - Piston

Info

Publication number: CN2262104Y
Application number: CN 96227162
Authority: CN
Inventors: 郝安阶
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-01-20
Filing date: 1996-01-20
Publication date: 1997-09-10
Anticipated expiration: 2006-01-20

Abstract

The utility model relates to a piston, which is an improvement of an existing internal combustion engine piston. The utility model is characterized in that a double-ring groove which can contain two piston rings is arranged on a piston body, and two piston rings are arranged in the double-ring groove. The utility model can efficiently reduce the piston air leakage problem caused by opening gaps of the piston ring in the compression process, so that the oil consumption of the internal combustion engine is reduced, the horse power is increased, the exhaust smoke level is reduced, and the service life is prolonged.

Description

A kind of piston

The utility model belongs to technical field of internal combustion engines, particularly relates to the piston of internal-combustion engine, is the improvement to existing piston.

At present, the piston of widely used internal-combustion engine all is single groove monocycle, piston ring all has opened gap, so in compression and outburst process, will inevitably produce the gas leakage problem, wearing and tearing along with piston and cylinder sleeve, the opened gap of piston ring can be increasing, and gas leak phenomenon is also just more and more serious, thereby cause the compressive force of internal-combustion engine and horsepower to reduce, starting difficulty, and oil consumption increases, befouling environment.

The purpose of this utility model is a kind of piston of design, can reduce effectively that piston compresses in cylinder sleeve and the outburst process in the gas leakage problem that produces because of the opened gap of piston ring.

The technical solution of the utility model is: be provided with oil ring groove on piston body, oil ring is installed on oil ring groove, bottom at piston body is provided with piston pin hole, be provided with the double-piston annular groove that to adorn 2 piston ring widthes on the top of piston body, 2 piston rings are installed on the double-piston annular groove, and the opening of 2 piston rings becomes the diagonal angle correspondence.In the double-piston annular groove, also establish upper spring piece groove and lower spring piece groove and upper spring piece (sheet) positioning hole and lower spring piece (sheet) positioning hole, mounting spring piece on upper and lower spring block groove and upper and lower spring block (sheet) positioning hole, spring block is corresponding with the opening of piston ring, and both width are identical

In the double-piston annular groove, also can not establish upper and lower spring block groove, only establish upper and lower spring block (sheet) positioning hole, mounting spring sheet on upper and lower spring block (sheet) positioning hole, spring sheet is corresponding with gap-clearance of piston rings, and both width equate.

On the double-piston annular groove, establish upper piston ring locating stud and lower piston loop mapping pin, on piston ring, establish the piston ring locating notch, slightly cave in the inboard at gap-clearance of piston rings two ends, and upper and lower piston ring locating stud is corresponding with the piston ring breach.

On piston body, also establish a single piston ring groove, ring installation on single piston ring groove.

Advantage of the present utility model: owing on piston body, adopt single groove double-piston ring structure, so in the time of reducing piston effectively and in cylinder sleeve, compress and break out, the gas leakage problem that produces because of the opened gap of piston ring, thereby the compressive force of internal-combustion engine and horsepower are increased, oil consumption reduces, exhaust smoke level reduces, and prolong working life.

Below in conjunction with accompanying drawing embodiment of the present utility model is further described.

Fig. 1 is the structural drawing of facing of the present utility model;

Fig. 2 is the rear view of Fig. 1;

Fig. 3 is the plan view of the utility model piston ring.

The embodiment that accompanying drawing provides, on piston body 1, be provided with oil ring groove 3, oil ring 4 is installed on oil ring groove 3, be provided with piston pin hole 2 in the bottom of piston body 1, be provided with on the top of piston body 1 and can adorn the wide double-piston annular groove 7 of two piston rings 8, two piston rings 8 are installed on double-piston annular groove 7.The opening of two piston rings becomes the diagonal angle correspondence.In double-piston annular groove 7, also establish upper spring piece groove 9 and lower spring piece groove 16, and upper spring piece (sheet) positioning hole 10 and lower spring piece (sheet) positioning hole 17, upper and lower spring block groove 9 and 16 and upper and lower spring block (sheet) positioning hole 10 and 17 on mounting spring piece 13, spring block 13 is corresponding with the opening of piston ring 8, and both width are identical.

In double-piston groove 7, also can only establish upper and lower spring block (sheet) positioning hole 10 and 17, mounting spring sheet 15 on upper and lower spring block (sheet) positioning hole 10 and 17, spring sheet 15 is corresponding with the opening of piston ring 8, and both width equate.

Also establishing upper piston ring locating stud 11 and lower piston loop mapping pin 18 on double-piston annular groove 7, establish the piston ring locating notch on piston ring 8, slightly caves in the inboard at piston ring 8 opening two ends, and upper and lower piston ring locating stud 11 is corresponding with piston ring breach 12 with 18.

On piston body 1, also establish a single piston ring groove 5, ring installation 6 on single piston ring groove 5.

To can use with the upper piston cylinder sleeve of packing into.

Also can be used for air compressor with upper piston.

Claims

1, a kind of piston, comprise piston body (1), on piston body (1), be provided with oil ring groove (3), go up installation oil ring (4) at oil ring groove (3), also be provided with piston pin hole (2) in the bottom of piston body (1), it is characterized in that being provided with and to adorn the wide double-piston annular groove (7) of two piston rings (8), go up at double-piston annular groove (7) two piston rings (8) are installed on the top of piston body (1).

2, piston according to claim 1, it is characterized in that in double-piston annular groove (7), establishing upper spring piece groove (9) and lower spring piece groove (16), and upper spring piece positioning hole (10) and lower spring piece positioning hole (17), at upper and lower spring block groove (9) and (16) and upper and lower spring block positioning hole (10) and (17) last mounting spring piece (13), spring block (13) is corresponding with the opening of piston ring (8), and both width are identical.

3, piston according to claim 1 and 2, it is characterized in that upper spring piece positioning hole (10) in double-piston annular groove (7) and lower spring piece positioning hole (17) but on also mounting spring sheet (15), spring sheet (15) is corresponding with the opening of piston ring (8), and both width are identical.

4, piston according to claim 1 and 2 is characterized in that establishing upper piston ring locating stud (11) and lower piston loop mapping pin (18) on double-piston annular groove (7), establishes piston ring locating notch (12) on piston ring (8).Slightly cave in the inboard at piston ring (8) opening two ends.

5, piston according to claim 1 is characterized in that also being provided with a single piston ring groove (5) on piston body (1), go up ring installation (6) at single piston groove (5).